CERAMIC WOOL BULK FIBRE Ceramic Wool Bulk Fibre Modules that are made from insulating refractory fibre. Bulk fibre texture gives it the added extra of exceptionally long fibres and superior mechanical properties essential to meet rugged service conditions. Bulk Fibre is processed from high purity alumina and silica constituent specially selected for high strength refractoriness and stability even under severe conditions. Bulk fibre can be handled and worked into expansion joints, wall penetrations and other areas with nominal skills